Resources Contact Us Home
Integrating analog/digital converter

Image Number 16 for United States Patent #6285310.

An analog/digital converter including an amplifier (1) wired as an integrator, a comparator (2) electrically downstream from the integrator, a time counter (6) which continually counts the pulses of a pulse generator (5), a bistable element (4), and additional circuitry. The bistable element (4) drives the input network of the amplifier (1) with at least one switch (3) in such a way that in one of its two positions ("off" condition) a current I.sub.x proportional to the analog measured value is integrated, and in the other position ("on" condition) a constant reference current I.sub.ref with opposite polarity to the current I.sub.x is integrated in addition to current I.sub.x. The switching of the bistable element from the "off" condition to the "on" condition is controlled by the time counter, and the switching from the "on" condition to the "off" condition (switch-off time) is controlled by the output signal of the comparator, which is generally synchronized with the pulses of the pulse generator. The pulses of the pulse generator (5) are summed to a result during the time the bistable element is in its "on" position. The additional circuitry displaces the switch-off time of the bistable element (4) beyond the time resulting from the above synchronization by a number of pulses of the pulse generator (5) determined by an arithmetic unit (31).

  Recently Added Patents
Center spreader adapter tool for toilet paper rolls and paper towel rolls that do not have inner cardboard tubes
Electrical installation arrangement
Bad column management with bit information in non-volatile memory systems
Mobile interactive kiosk method
Pointer display device, pointer display/detection method, pointer display/detection program and information apparatus
Phase lock loop with injection pulse control
Dry-cooling unit with gravity-assisted coolant flow
  Randomly Featured Patents
Microprocessor controlled fluid dispensing system
Active substance combinations having insecticidal and acaricidal properties
Focus detector having a correlation operation processor
Method of responding to an incoming voice call
Height position adjusting device for a reproducing transducer in a rotary recording medium reproducing apparatus
Display device, electronic appliance and camera
Optical projection of a thermal target
Camera for video tape recorder
Tubeless tire with bead protectors having air-impermeable layer and method for producing same
Glider launching device